Address lintian's error and several warnings

debian/changelog

@@ -2,6 +2,10 @@ epiphany-browser (43.1-1) UNRELEASED; urgency=medium
 
   * New upstream release
     - Includes fix for CVE-2023-26081 (Closes: #1031727)
+  * Address lintian's error and several warnings:
+    - debian/source/lintian-overrides: Add to override source-is-missing
+      for third-party/highlightjs/highlight.js; the source is there.
+    - debian/copyright: Update to reflect removals and relocations.
 
  -- Amin Bandali <bandali@canonical.com>  Tue, 21 Feb 2023 20:17:42 -0500
 

debian/copyright

@@ -54,26 +54,20 @@ Copyright: 2013-2015 Ekaterina Gerasimov
            2014 Siyu Yang
 License: CC-BY-SA-3.0
 
-Files: lib/contrib/gvdb/*
+Files: third-party/gvdb/*
 Copyright: 2010 Codethink Limited
 License: LGPL-2+
 
-Files: lib/contrib/eggtreemultidnd.*
-        lib/widgets/contrib/gd-two-lines-renderer.c
-Copyright: 2001, 2011 Red Hat, Inc.
-License: LGPL-2+
-
 Files: lib/widgets/contrib/nautilus-floating-bar.c
 Copyright: 2011 Red Hat, Inc.
 License: LGPL-2+
 
 Files: lib/widgets/contrib/nautilus-floating-bar.h
-       lib/widgets/contrib/gd-two-lines-renderer.h
 Copyright: 2011 Red Hat, Inc.
            2018 Igalia S.L.
 License: LGPL-2+
 
-Files: src/resources/readability.js
+Files: third-party/readability/Readability.js
 Copyright: 2010, Arc90 Inc
 License: Apache-2.0
 

debian/source/lintian-overrides

+# False positive; the source is there.
+epiphany-browser source: source-is-missing [third-party/highlightjs/highlight.js]